28890282 has 8 divisors (see below), whose sum is σ = 57780576. Its totient is φ = 9630092.

The previous prime is 28890263. The next prime is 28890307. The reversal of 28890282 is 28209882.

It is a sphenic number, since it is the product of 3 distinct primes.

28890282 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28890282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2407518 + ... + 2407529.

It is an arithmetic number, because the mean of its divisors is an integer number (7222572).

Almost surely, 2^28890282 is an apocalyptic number.

28890282 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28890282 is a wasteful number, since it uses less digits than its factorization.

28890282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815052.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28890282 is about 5374.9680929286. The cubic root of 28890282 is about 306.8437349083.

The spelling of 28890282 in words is "twenty-eight million, eight hundred ninety thousand, two hundred eighty-two".